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Finding the Fourth Proportional to 63.55, 95.90 and 61.54

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Solution

The fourth proportional to 63.55, 95.90 and 61.54 is: 92.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.55 : 95.90 = 61.54 : x
  2. Step 2: Convert to fraction form
    63.55/95.90 = 61.54/x
  3. Step 3: Cross multiply
    63.55x = 95.90 × 61.54
  4. Step 4: Simplify right side
    63.55x = 5,901.69
  5. Step 5: Solve for x
    x = 5,901.69/63.55
  6. Step 6: Final answer
    x = 92.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.